Semiclassical Approach to Orbital Magnetism of Interacting Diffusive Quantum Systems

DOI to cite this document:: 10.5283/epub.1439

Ullmo, Denis ; Richter, Klaus ; Baranger, Harold U. ; Oppen, Felix von ; Jalabert, Rodolfo A.

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Date of publication of this fulltext: 05 Aug 2009 13:29

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Abstract

We study interaction effects on the orbital magnetism of diffusive mesoscopic quantum systems. By combining many-body perturbation theory with semiclassical techniques, we show that the interaction contribution to the ensemble-averaged quantum thermodynamic potential can be reduced to an essentially classical operator. We compute the magnetic response of disordered rings and dots for ...